Teledyne 3000 Ultra Trace - PPB oxygen analyzer - Manual (Page 32)

3 Installation Model Ultra Trace 3000
3-10 Teledyne Analytical Instruments
3.4 Installing the Micro-Fuel Cell
The Micro-Fuel Cell, Model B-2CXL is not installed in the cell block
when the instrument is shipped. Install it before the analyzer is placed in
service.
The Micro-Fuel cell is located inside the stainless steel cell block behind
the front panel (see Figure 3-8). To install the cell:
1. Remove power to the instrument by unplugging the power cord
at the power source.
2. Open the front panel door by pressing the release button on the
top right corner of the door all the way in with a narrow gauge
tool.
3. With one hand hold the top of the cell block while unscrewing
the plastic ring holder. Once the plastic ring is loose, remove the
top of the cell block.
CAUTION:
The cell is shipped separately inside two bags filled with oxygen-free
inert gas. Extreme care must be taken to ensure that the cell is exposed to air
for the very minimum amount of time, including during installation.
As an example, an air exposure of 3 to 5 minutes may require 24 hours
or longer before the cell recovers to less than 0.5 ppm on an oxygen free
sample gas. On the other hand, if the air exposure is limited to less than 10
seconds, the recovery time will be reduced to two hours, or less.
3.5 Testing the System
Before plugging the instrument into the power source:
• Check the integrity and accuracy of the gas connections. Make
sure there are no leaks.
• Check the integrity and accuracy of the electrical connections.
Make sure there are no exposed conductors
• Check that inlet sample pressure is within the accepted range (se
section 3.3.1).
Power up the system, and test it by performing the following
operations:
1. Repeat the Self-Diagnostic Test as described in chapter 4, section
4.3.5.